Olav Bjaaland shaving off 2/3 of the sledges’ weight without compromising their sturdiness; Amundsen’s South Pole Expedition, 1910-12.

“[Oscar] Wisting is sitting in the Great Ice Barrier and sewing tents on his Singer—in +14°…He is sewing new, light groundsheets in the tents. By these means, we will save several kilos.” — Amundsen, diaries; Amundsen’s South Pole Expedition, 1910-12.